Imp. Caes. Nerva Traianvs Avg., 1993 p. 230, etc. (Imperator Caesar Nervae Filius [i.e. son of Nerva, the preceding emperor] Nerva Traianus Augustus Germanicus; Traianus Augustus Germanicus)
Trajano, emperador de Roma, c2000 t.p. (Trajano) p. 11 (M. Ulpius Trajano) p. 12 (M. Ulpius Traianus el Jóven)
Optimus princeps, c1999 (Traiano) p. 11 (Marco Ulpio Traiano)
Wikipedia, German, via WWW, Aug. 2, 2013 (Marcus Ulpius Traianus; emperor of Rome; born Sep. 18, 53 in Italica or Rome; died Aug. 8, 117 in Selinus)